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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2010-05-05 23:07:41 +0000 |
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| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2010-05-05 23:07:41 +0000 |
| commit | 51bfd452d5d748abc5e65b71b8f7213a13e10569 (patch) | |
| tree | 254324d85398e40007cc5dc97d03ced6399ee0a4 /test | |
| parent | 08bbda3811dcd797943ca162f3799f2d52dc2f6b (diff) | |
| download | external_llvm-51bfd452d5d748abc5e65b71b8f7213a13e10569.zip external_llvm-51bfd452d5d748abc5e65b71b8f7213a13e10569.tar.gz external_llvm-51bfd452d5d748abc5e65b71b8f7213a13e10569.tar.bz2 | |
Fix PR6520. An earlyclobber physreg must not be allocated to anything else.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103133 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/CodeGen/X86/2010-05-05-LocalAllocEarlyClobber.ll | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/test/CodeGen/X86/2010-05-05-LocalAllocEarlyClobber.ll b/test/CodeGen/X86/2010-05-05-LocalAllocEarlyClobber.ll new file mode 100644 index 0000000..4b6a94d --- /dev/null +++ b/test/CodeGen/X86/2010-05-05-LocalAllocEarlyClobber.ll @@ -0,0 +1,31 @@ +; RUN: llc < %s -O0 -regalloc=local | FileCheck %s +; PR6520 +target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128-n8:16:32" +target triple = "i386-apple-darwin10.0.0" + +%0 = type { i8*, i8*, i32 } + +define i8* @func() nounwind ssp { +entry: + %retval = alloca i8*, align 4 ; <i8**> [#uses=2] + %ret = alloca i8*, align 4 ; <i8**> [#uses=2] + %p = alloca i8*, align 4 ; <i8**> [#uses=1] + %t = alloca i32, align 4 ; <i32*> [#uses=1] +; The earlyclobber $1 should only appear once. It should not be shared. +; CHECK: deafbeef, [[REG:%e.x]] +; CHECK-NOT: [[REG]] +; CHECK: InlineAsm End + %0 = call %0 asm "mov $$0xdeafbeef, $1\0A\09mov $$0xcafebabe, $0\0A\09mov $0, $2\0A\09", "=&r,=&r,=&{cx},~{dirflag},~{fpsr},~{flags}"() nounwind, !srcloc !0 ; <%0> [#uses=3] + %asmresult = extractvalue %0 %0, 0 ; <i8*> [#uses=1] + %asmresult1 = extractvalue %0 %0, 1 ; <i8*> [#uses=1] + %asmresult2 = extractvalue %0 %0, 2 ; <i32> [#uses=1] + store i8* %asmresult, i8** %ret + store i8* %asmresult1, i8** %p + store i32 %asmresult2, i32* %t + %tmp = load i8** %ret ; <i8*> [#uses=1] + store i8* %tmp, i8** %retval + %1 = load i8** %retval ; <i8*> [#uses=1] + ret i8* %1 +} + +!0 = metadata !{i32 79} |